2-Color Non-Contact Infrared Temperature Transmitters for Industrial and Laboratory Applications Mikron M770/780 Series Mikron M770/780 Series

• Self-contained sensor head “Infraducer ®” with analog 4-20mA linear and digital RS485 outputs • Through-lens sighting • Variable focussing • 0.5% accuracy • Fast response of 7.5 ms • Fiber optic version for harsh environments • 4 digit alpha numeric display • Remote configuration software Model M780 Fiber Optic Version • Single 24V power supply for Harsh Environments

A digital alpha numeric display M770S rear panel

Focussing knob (adjustable from rear panel)

Eye piece

Output terminal strip

Visual sighting

Model M770/770S through-lens sighting (M770S)

“Infraducer” is a registered trademark Reticle defines of Mikron Instrument Co. exact area of temperature Visit www.mikroninst.com measurement M770/780 2-color Infrared Temperature Transmitters

Innovative Design M780 for Inaccessible or Mikron M770/780 “Infraducers” series represent another Environmentally Severe milestone in innovative infrared thermometry. Designed by Applications integrating advanced non-parallax optical sighting with a fully The fiber optics based M780 digital electronics system in a single package providing unparal- “Infraducer” is recommend- leled accuracy and speed for demanding industrial and scientific ed for areas where the applications. A built-in 4-digit alpha numeric display located on following conditions exist: the rear panel displays temperature and menu for selection of instrument initial settings. The linear analog 4-20mA and RS485 A. When direct sighting with digital outputs provide the convenience of long distance signal the M770S is impossible due transmission for temperature measurement, control and data to obstructions. The flexibility collection. The M770/780s’ unmatched array of protective of the fiber optics cable M780 rear panel accessories, demonstrate Mikron’s commitment to long-term overcomes this problem. trouble-free operation of these instruments. B. Where RF or EMI interference is a problem, requiring the electronics to be placed at a safe distance from the source Universal Application of interference. The M770/780 “Infraducers” series has the ability to measure C. Where exceptionally high ambient temperatures exist. Fiber the temperature simultaneously in three different ways. This optic tips and lens assemblies can withstand temperatures up insures that all laws of radiation physics are observed for to 600°F (315°C) without cooling and up to 1000°F (540°C) accurate measurements. If there is any inconsistency between with air cooling. readings, the smart microprocessor algorithm identifies the source of the discrepancy on the rear display for user‘s D. Where corrosive environments prohibit the use of a immediate correction. The RS485 output when connected conventional system. to a PC allows correction of parameters remotely. E. In vacuum applications where sighting through the window is difficult or impossible, a fiber optics lens assembly can be Why 2-color Infrared Thermometry? placed inside the vacuum vessel, using Mikron’s exclusive fiber M770/M780 “Infraducers” series also utilizes the 2-color optic feed-thorough bushing. principle, in which the temperature measurement is made by two F. When a non-electrical fiber optic version allows installation in independent detectors with different but adjacent narrow band hazardous locations. infrared filters. By ratioing the output of these two detectors, the temperature measurement becomes independent of emissivity Application Assistance M770S and a number of other factors that during the measurement Many years of experience in solving unusual degrade the accuracy of conventional instruments. Thus, and difficult infrared temperature meas- temperature measurement with the M770/780 are: urement problems qualifies our sales • Unaffected by emissivity change for gray targets and application engineering staffs to • Unaffected by dust and other contaminants in the field of view offer solutions to the most challenging • Unaffected by varying target size (provides accurate reading with applications encountered in industry only 5% of target area within field of view) and science. • Unaffected by dirty viewing window Quality Assurance • Unaffected by small oscillating target within field of view Reliability is never taken for granted Model M770S at Mikron. Before final calibration, The M770S is housed in a compact, rugged, anodized aluminum every “Infraducer” is tested and housing about 200mm (8”) long. This self-contained sensor head burned-in, rigorously subjected to incorporates a high quality, high resolution variable focus optical a period of thermal cycling and system that provides a sharp erect image of the target. vibration to insure the integrity of Focussing is executed by turning the focusing knob on the rear the instrument. panel of the instrument. Mikron maintains ISO 9001 certification The M770S enables precision pinpointing of small target areas. with Factory Mutual with auditing The user simply adjusts the instrument until the desired target is interval of every 6 months. clear within the reticle. (See front cover).

Model M770 The M770 is identical to the M770S except it has no through- Aluminum housing to lens sighting and focusing is factory fixed for a pre-determined protect optics and distance. This unit is only desirable for application where target electronics is sufficiently large and pin pointing of measurement spot is not important.

2 Typical Applications

The unique features of models M770/780 “Infraducers” makes heat treating, ore smelting, wire and rod forming, induction this series ideal for a wide range of temperature measurement heating, vacuum furnaces, utility furnaces, glass furnaces, rotat- applications above 300°C (540°F). These include metal melting, ing kilns, crystal growing and RTP in the semiconductor industry.

Vacuum Melting Crystal Growing

M770S M770S Seed

Crystal Melt

Melt Sees through quartz or sapphire dirty windows Induction Coil

Foundry Glass Furnaces Molten Glass M770S

M770S

Glass Forehearth Gob

M780 “Infraducer” Fiber Optic Version The use of fiber optic infrared thermometers for measurement established. Further advantages of the M780 lie in its ability to and control of automatic induction heating systems is well accurately measure shiny surfaces.

Aerospace Automotive Lens OUT Induction Coil Assembly Fiber optic cable This illustration indicates how model Fiber Optic M780 M780 can be used Cable at multiple locations along the length of the process. M780 Piston Ring IN

Vacuum Semiconductor Halogen Lamps or high Reflector pressure Quartz Window Semiconductor bushing Wafer

Enclosure Enclosed Furnaces – In vacuum or high pressure furnaces M780 Light Probe often sighting through a window is difficult or undesirable. In this application a fiber optic lens assembly is placed inside the Flexible Fiber Optic Cable vessel, using a vacuum bushing feed through. RTP Chamber – Model 780 is designed for RTP applications. A high-speed measurement combined with custom designed sapphire probe allows silicon wafer temperature measurement with precision.

3 How to Select an M770 or M770S “Infraducer”

Selection Procedure: Selection Chart 0C or F a. M770 – Fixed focus (no sighting) M770S 0750– 2 000C R L 1 b. M770S – Variable focus, see through-lens sighting 3 4 After choosing the desired model follow these 4 steps. 1 2 Temperature Range Field of Spectral Output Operating 1. Select the temperature range and units (C or F) from ranges (see note 1) View Ratio Response Distance (see note 2) listed. Insert ranges and units in Box 1 , filling in all blanks °C °F CODE CODE CODE with zeros. 300-850* 572-1562* 380mm 60:1 R1 (15”) to 1 450-1200* 850-2200* Analog 2. Place letter “R” or “R1” in Box 2 for standard spectral TWO infinity 4-20mA response. NARROW 150mm 600-1400 1100-2550 60:1 Linear BANDS L (6”) to 3. Select signal output; (L) for standard 4-20mA linear and and 2 NEAR 380mm 3 R Digital (15”) RS485 and insert in Box . 750-2000 1400-3600 90:1 INFRARED RS485 4. Select the correct operating distance. 50mm 3 1000-3000 1800-5400 180:1 (2”) fixed a. If you selected the M770 fixed focus model, specify the desired focus distance in writing (See Table 1 and optical Notes: 1. Special temperature ranges are available upon request. 4 resolution box below) and enter “U” in Box . 2. See table 1 for availability of standard fixed focus distances for a b. If you selected the focusable M770S read the section given FOV ratio. “Optical Resolution” below. Then choose the desired Table 1 – M770 Fixed Focus Distance operating distance and insert the corresponding Code 4 Field of Standard Fixed Minimum No. in Box . View Ratio Focus Distance Focus Distance Example 30:1 0.75m (30”) 50mm (2”) 60:1 1.5m (60”) 150mm (6”) The model chosen for the instrument indicated in the selection 90:1 2.1m (90”) 150mm (6”) chart is the focusable M770S with through-lens sighting for 180:1 4.5m (180”) 380mm (15”) a temperature range of 750° to 2000°C, standard spectral response of two narrow bands, analog 4-20mA linear and digital RS485 outputs and a focusable operating distance of 380mm Table 2 – M770S (15”) to infinity with field of view ratio of 90:1. Minimum target sizes are shown in the table below Field of Version 1 Version 2 Version 3 View Focus 15” Focus 6” Focus at Ratio to Infinity to 15” 50mm (2”) Optical Resolution 6mm (0.24”) 2.5mm (0.10”) 0.8mm (0.03”) 60:1 Model M770S at 380mm (15”) at 150mm (6”) at 50mm (2”) 4mm (0.16”) 1.8mm (0.07”) Three different lenses are available for the M770S. The one you 90:1 N/A should choose depends on the desired working distance of the at 380mm (15”) at 150mm (6”) 2.1mm (0.1”) 0.8mm (0.03”) unit. The first version is designed to measure temperature at 180:1 N/A distances of 380mm (15”) to infinity. The second version has a at 380mm (15”) at 150mm (6”) working range of 150mm (6”) to 380mm (15”). The third version is fixed to measure temperatures at a 50mm (2”) distance. Proper focussing is achieved by mounting the unit at the desired distance and adjusting the focussing knob on the rear panel of the instrument until the target comes into clear view in How to Select an M780 “Infraducer” the reticle. When the target is in focus to the eye, it is also in The selection process for the M780 is similar to that of the M770, focus to the detector. Reticle defines exact size and position of with the additional requirements of the fiber optic feature. The measurement spot. selection steps are as follows: Model M770 Exact Target Diameter determined by the formula: 1. Select the temperature range and units (C or F) from ranges listed. Insert ranges and units in Box 1 , filling in all blanks Target Diameter (d) = Focussed Distance (D) Field of View Ratio with zeros. Target size (d) 2. Place letter “R” or “R1” in Box 2 for standard spectral response. Distance (D) 3. Select signal output; (L) for standard 4-20mA linear and Example: M770, distance with 60:1 FOV ratio focussed at RS485 and insert in Box 3 . 380mm (15”) distance 4. Select the length of fiber optics cable and insert code number D Minimum Target Size(d) = =380 = 6.4mm in Box 4 . FOV ratio 60 5. Select the required lens assembly from the field of view (or =15” = 0.25”) 60 diagrams and insert code number in Box 5 . 4 How To Select An M780 “Infraducer”

Selection Chart

0C or F M780 0750– 2 000C R L //S12 060S 1 2 3 4 5

Temperature Range Field of Max. Fiber Spectral Output Fiber Optic Standard Focus Lens Assembly (see note 1) View Ratio Optic Length Response Cable (see note 2) Length °C °F CODE CODE cm Ft. CODE FOV FOCUS CODE

450-1200* 850-2400* 30:1 360cm (12’) 90 3 S03 R1 30:1 30” 030S Analog 180 6 S06 TWO 4-20mA 360 12 S12 600-1400 1100-2550 30:1 900cm (30’) NARROW 540 18 S18 Linear BANDS L 720 24 S24 60:1 60” 060S and 750-2000 1400-3600 60:1 900cm ( 30’) NEAR 900 30 S30 R digital INFRARED Special RS485 Length – SXX 90:1 90” 090S 1000-3000 1800-5400 90:1 900cm ( 30’) (consult Mikron)

Standard Focus Distance

FOV Ratio Field of View Diagrams Example

0 30 60 DISTANCE IN. The model number for the M780 “Infraducer” 30:1 TARGET DIA. IN. .40 1.0 2.5 indicated in the boxes designates a sensor with a Min. Focusable Distance: 7.6cm (3.0”) temperature range of 750° to 2000°C with an analog 1.0 2.5 5.7 TARGET DIA. CM 4-20mA linear and digital RS485 outputs using DISTANCE CM 0 76 140 360cm (12’) length of fiber optics cable, a standard

0 60 120 lens assembly with a field of view ratio of 60:1 at DISTANCE IN. 60:1 TARGET DIA. IN. .40 1.0 2.5 standard focus distance of 1500mm (60”). Min. Focusable Distance: 10cm (4.0”) Notes: 1. Special ranges are available upon request. 1.0 2.5 6.2 TARGET DIA. CM 2. For non-standard focus distance see DISTANCE CM 0 150 300 explanation in chart below. 0 90 180 DISTANCE IN. 90:1 TARGET DIA. IN. .40 1.0 2.5 Min. Focusable Distance: 15.2cm (6.0”) 1.0 2.5 6.4 TARGET DIA. CM

DISTANCE CM 0 230 460

Non-Standard Focus Distance M780 Lens Assembly When non-standard focus distance is desired, such as close focus, insert code”U” instead of “S” as the last digit in the model number specify focus distance in writing. Minimum target diameter is deter- mined by the formula. Focussed Distance (D) Minimum Target diameter (d) = Fiber optic Field of View Ratio cable Target diameter (d)

Lens assembly Distance (D)

Example: Min. target diameter for focus distance of 30cm (12”) and FOV ratio of 90:1, is Mounting bracket 30 12 Minimum Target diameter = 90 = 0.33cm or 90 = (0.13”)

5 Specifications

M770/770S/780 Specifications

Accuracy: ±0.5% of full scale , (1% for ranges marked *) alarm, Average, Peak, Slope, Emissivity, Transmission Loss, Repeatability: 0.1% of full scale span Temperature span, Rate of temperature change, Peak and Temperature Resolution: 1 °C/°F Hold, Speed of response and Internal instrument temperature Spectral Response: One or two narrow bands near infrared Analog Output: 4-20mA (500Ω max load) isolated and region scaleable Sighting Methods: Through the lens sighting (M770S only) Digital Output: Bi-directional RS485 communications Working Distance: 15” to inf. (38cm to inf.) (networkable) Close Focus Option: 6” to 15” or fixed at 2” (50mm) Relay: Programmable Relay Output, Type C Contacts Temperature Display: Bright alpha numeric LED, 4 digits Power Source: 19 to 35 V DC at 150 mA Typical 17.5mm (L) x 6mm (H) (0.7” x 0.25”) Ambient Temperature: Temperature Mode: Current temperature, average Operating: 0° to 50°C (32° to 122°F) temperature (up to 100 reading average), Peak with auto reset With cooling jacket: up to 200°C (32° to 392°F) Speed of Response: 7.5 milliseconds for 95% of final Storage: -40° to 80°C reading. Adjustable to 1 second Housing Material: Hard anodized aluminum Slope: Adjustable from 0.800 to 1.200 in 0.001 steps Housing: NEMA 4 (IP 65 IEC529) (with Protective Jacket) Emissivity: Adjustable from 0.10 to 1.00 in 0.001 steps Dimensions: 178mm x 60mm (7” x 2.4”) Menu Selection: By rear panel push buttons °C/°F, High/Low Weight: 0.46kg (1 lb.)

M770/770S Housing Dimensions 178 (7.02) 60.5 (2.38) DIA 142.2 (5.60) Display

44.5 (1.75) 30.5 DIA (1,200) DIA

21.5 Sighting eye Focus knob (2) Jam Nuts Flexible (.85) piece 3/4-16 THD Fiber Optic (M770S Only) Output terminal Cable 16 (.62)

38 (1.5”) M780 Standard Note: M780 electronics is placed in same housing as M770. See above for details. 114 (4.50) Lens Assembly Dimensions are mm (inch)

Communication Software Additional Specifications for M780 Only Optionally available is Mirdac software designed for M770/780 Lens Assembly Material: All lens assemblies are machined “Infraducers” series by using the standard RS485 output for from solid stainless steel material. performing remote configuration settings, data collection and Lens Mounting: All mounting brackets and necessary recording. Remote setting includes: Slope, Emissivity, Degrees hardware are supplied by Mikron. C/F, Speed of response, Temperature span, High/low alarms, Fiber Optic Cable Material: Glass fibers in bundle form Peak and Hold, Rate of temperature change, Transmission Loss, protected by flexible stainless steel sheath. Min. bend radius Internal instrument temperature and Calibration adjustments. In 50mm (2”). addition the software allows; Operating Ambient Temperature: • Log data to disk in ASCII format with variable speed exportable a. Lens assembly: -60° to 315°C (-75° to 600°F) to Excel, Lotus and Word Lens with cooling jacket: up to 500°C (930°F) • Graph of temperature versus time b. Fiber optic cable: stainless steel: -60° to 200°C (-75° to 392°F) NIST Traceable Calibration Certificate Relative Humidity: 90% (non-condensing) Mikron infrared thermometers are supplied with calibration Vibration: 3g’s any axis continuous certificate at no charge. The additional assurance of a calibration certificate traceable to National Institute of Standard and Shock: 50g’s Technology (NIST), is optionally available at additional cost. 6 Accessories

Mikron has an incomparable array of accessories, too Air Purge and Cooling Assembly numerous to list here. The following is a selection of Though simple in outward appearance, this assembly performs some of the more commonly used devices. very important functions—purging and localized cooling. Air Protective Jacket and End Cap purging of the optics is extremely important when airborne contaminants can build up on the lens and eventually “blind” The cast aluminum jacket and end cap protects the the optical assembly. “Infraducer” from physical damage when located in environ- ments of heavy industry and also dampens the effect of rapid In contrast to many air purge systems currently in use which ambient changes. The precision machining of the protective actually develop a negative pressure vortex and contribute to the jacket allows for easy removal and replacement of the build up of contaminants, the Mikron air purge assembly has “Infraducer” with no loss of alignment. In high ambients when been carefully engineered by incorporating a unique air director temperature exceeds the maximum rated temperature of the to insure laminar flow, in order to prevent contaminant build-up unit, the use of a protective jacket with cooling capability is from occurring. A flow of only 75 CFH (2CMH) of normally mandatory. Extensive research and testing of the jacket assures clean industrial air will keep the optics clean under most uniform cooling along its entire length and simultaneously conditions. isolates the “Infraducer” from thermal influence. While air The metal sight tube is designed for installations where it is flow alone is sufficient for light cooling, water must be used desirable to augment the air purge and facilitate approximate for moderate and heavy cooling. aiming of the “Infraducer”. To order specify PN 11609-7 no cooling. In addition, the cooling plate section of the air purge assembly To order specify PN 11609-8 with cooling. allows the coolant to circulate in a chamber which allows cooling of “Infraducer” up to ambient temperature of 100°C (210°F). Ambient Temperature The air purge assembly depends upon the protective jacket for Gal/Hr. Liters/Hr. °F °C mounting. 150 65 0.2 0.8 200 95 0.6 2.3 To order specify PN 11524-L. 250 120 1.0 3.8 300 150 2.0 7.6 Aiming Flange Assembly 350 175 3.0 11.4 For installations requiring durable mounting of the “Infraducer” 400 205 4.0 15.2 while allowing for adjustment of the optical path to a maximum of 5° in any direction.

To order specify PN 11649-2.

OUTPUT REMOVABLE CABLE CAP .50 (13) ¿ (4) MOUNTING HOLES EQ. SP. ON A 4.7500 (121) ¯ B.C. 1/8 NPT AIR PURGE ASSY COOLANT IN 14.35 COOLANT 6.00 ¿ 1.00 (364) (152) 3.00 5.60 3.25 OUT (76) (25) (142) (83) MOUNTING (JACKET) 2.31 ¿ .45 BRACKET (59) (11) 1/8 NPT 1/8 NPT COOLANT IN COOLANT OUT REMOVABLE CAP

PROTECTIVE COOLING 1.90 2.88 ¿ JACKET ¿ 2.81¿ (73) (48) (71) COOLANT IN (JACKET) 1/8 NPT AIR AIR PURGE IN COOLANT OUT PURGE AIR PURGE 1.94 SIGHT TUBE 1/8 NPT 1.50 (49) (ADDITIONAL) IN COOLANT OUT (38) 1/2 NPT 2.50 MOUNTING FLANGE 10û (63) OUTPUT CABLE ADJUSTABLE SPRINGS BUSHING NOTES 9.41 (239) 1. ALL CASTINGS AND FLANGES ARE ANGLE OF ALUMINUM UNLESS OTHERWISE SPECIFIED 1/4 - 20 TAP X .375 DP. ADJUSTMENT (2) HOLES 2. ALL HARDWARES ARE STAINLESS STEEL (X-Y) AXIS PROTECTIVE JACKET COOLING (OPTIONAL) MOUNTING SURFACE AIR PURGE 3. ALL DIMENSIONS ARE IN INCHES (MM) ASSEMBLY COOLANT IN (ADDITIONAL) SPRING LOADED AIMING FLANGE MOUNT SIGHT TUBE

7 Accessories

30mm Removable Window right Right Angle Viewing (1.2”) Assembly angle Attachment viewing Frequently in industrial applica- Incoming attachment Physical limitations often prohibit tion the outgassing from process radiation conventional mounting of lens may penetrate the instrument 90° assemblies. The right angle sight tube and deposit on optical viewing attachment provides a assembly, or air supply may be means for rotating the physical; Lens shut off inadvertently resulting assembly aspect of the lens assembly by in degrading the temperature 90° while viewing the desired measurement. The removable target. By using the right angle viewing attachment the lens window assembly is exclusively designed to overcome this assembly length of 114mm (4.5”) is reduced to 30mm (1.2”). problem. The window assembly is mounted in front of protective right angle viewing is only available for standard and focusable jacket. The maintenance personnel can periodically remove the lens assembly. To order specify PN 16376-2. window by simply pulling it from a slot, cleaning the window if necessary and inserting the window back into the slot. To order Fiber Optic Target Illuminator specify PN 14925-1. Mikron offers a fiber optic illuminator for precision illumination of the target 1 M780 Air /8 NPT air purge in areas when used in conjunction with Purge/Cooling fiber optics and lens assembly. This Assembly illuminator can conveniently be taken An air purge is mandatory to lens assembly location for preci- in most industrial applica- sion refocusing or identification of Air purge assembly tions to keep the lens AC Line Operation target area. assembly clean for To order: extended periods of time. The air purge is designed to be effec- Specify PN 12110-1A for 115 VAC tive with filtered plant air which does not need to be instrument Specify PN 12110-2B for 220 VAC 3 3 quality. An air flow of 2.8m /Hr. (100ft /Hr.) is sufficient for most Specify PN 12110-3C for 100 VAC applications. The air purge assembly will also provide cooling if the lens assembly is likely to be exposed to ambient tempera- Power Supply tures up to 400°C (750°F). The overall length of this assembly is Power supply for M770/780 168mm (6.6”). The diameter of the air purge sight tube is 19mm “Infraducer” is a low profile, sealed, (0.75”). To order specify PN 14296-1. switching power supply with universal AC input voltage and frequency. Base plate Fiber Optic Vacuum Atmosphere Bushing Maximum in-rush current of 15A Vacuum protective power supply when a In vacuum applications where momentary short circuit occurs. To sighting through a window is Power Supply order specify PN 18712-1. difficult or impossible, a fiber Fiber optic Fiber optic optic cable can be placed Input voltage: 90 - 250 VAC cable out cable in inside the vacuum up to Frequency: 47 to 63Hz 10-6 torr with the aid of this Output Voltage: 24V at 0.7 Amps Vacuum Bushing bushing. The bushing holds a Operating Temp: 0° to 50°C (32° to 122°F) bundle of fiber optics which is sealed for high vacuum applica- Connection: 5P/9.5mm pitch terminal block tions. This system seals the vacuum and allows for removal of Dimensions: 98mm (H) x 97mm (W) x 35mm (H) the cable on either side of the busing without affecting the (3.9” x 3.8” x 1.4”) integrity of the vacuum seal. To order specify PN 12506. Made in U.S.A. The M770/780 “Infraducers” series are designed and built by Mikron, the leading innovator in infrared technology, manufacturing facility is located in Oakland, New Jersey, USA. Warranty All Model M770/780 “Infraducers” series are covered for all defective material and workmanship for one full year after shipment.

Mikron Infrared Inc., Headquarters West Coast Office: Visit our websites: www.mikroninst.com 16 Thornton Road Mikron www.IRimaging.com Oakland, NJ 07436 USA 4475 Dupont Court #9 Tel: 201-405-0900 Ventura, CA 93003 Tel: (USA only) 800-631-0176 Tel: 805-644-9544 Fax: 201-405-0090 Fax: 805-644-9584 M770-780 Rev. 1.3 E-mail: [email protected] E-mail: [email protected] Printed in USA ISO 9001 103102